NCP1800DM42R2G ON Semiconductor, NCP1800DM42R2G Datasheet - Page 7

• Manufacturer Part Number: NCP1800DM42R2G
• Description: Battery Management 4.2V Single Cell Lithium-Ion Charger
• Manufacturer: ON Semiconductor

Specifications of NCP1800DM42R2G

• Battery Type: Li-Ion
• Output Voltage: 4.2 V
• Output Current: 20 mA
• Operating Supply Voltage: 2.5 V to 16 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 20 C
• Package / Case: MSOP-8
• Mounting Style: SMD/SMT
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

V
Fault Detected
V
OUT:0.1 I
SNS
Pre−Charge
CFLG:High
CDIS
OR
< V
= Low
PCTH
REG
Fault Detected OR V
V
UVLO
& V
V
SNS
End of Charge
SNS
CFLG:Low
OUT:High
< V
Figure 14. NCP1800 State Machine Diagram
< V
CC
V
PCTH
SOVLO
< V
CDIS
OVLO
= Low
Fault Detected
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V
CDIS
Fault
Detected OR
V
V
Full−Charge
OUT:1 I
CDIS
CFLG:High
SNS
NCP1800
OR
= Low
< V
= Low
7
REG
REG
No Fault Detected
Trickle Charge
CFLG:Low
OUT:V
V
SNS
REG
Fault Modes:
1. Charger Low Output (V
2. Runaway Charger (V
3. Battery Removed (V
V
REG
I
SNS
I
Final Charge
SNS
CFLG:High
OUT:V
0.1 I
> 0.1 I
SNS
REG
CC
REG
CC
> V
> V
REG
< V
OVLO
SOVLO
UVLO
)
)
)